From patchwork Sun Mar 28 15:24:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: ChiYuan Huang X-Patchwork-Id: 12169003 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B5D8FC433E1 for ; Sun, 28 Mar 2021 15:25:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 74D7E61972 for ; Sun, 28 Mar 2021 15:25:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231228AbhC1PYq (ORCPT ); Sun, 28 Mar 2021 11:24:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56868 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231154AbhC1PYe (ORCPT ); Sun, 28 Mar 2021 11:24:34 -0400 Received: from mail-pg1-x52f.google.com (mail-pg1-x52f.google.com [IPv6:2607:f8b0:4864:20::52f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4CF7FC061756; Sun, 28 Mar 2021 08:24:34 -0700 (PDT) Received: by mail-pg1-x52f.google.com with SMTP id m7so7812908pgj.8; Sun, 28 Mar 2021 08:24:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=xNXtry2Hu3JdjVXeffx4v7Aev22e7UumqFVP1K8btoQ=; b=aAuR5+mdzcpvzR1mMmjxciZ/2g/D1qb9ZNVUMHd/tF+pLw2UJ1dYlX2vMCiO3KWQb7 hCmEJglsNMpe58Ddwlvj9AOVqRLfBbodDiAeAyJVM+TilT9EVsjRGhLq2jcJ7EB+ULyZ oF8E8oVL0o4OSIr+ccQH98enIrDMJVGDBPeeQ7n/6E72TI4dw1rlQAW2eujfaBhKPk91 rgOu+oUS9EjrAWKN1iSXnec8v2Que6meUrX+EmbRbhh5Xh/4nBiGZr1l4AxRd7cWUlPa z46EygnDfoH6f+SE/aWECPAKQZN4LUVWKpUnKfXYKcEQ6JaQysdCo//A6EyPVgnlk3Qd 4mfA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=xNXtry2Hu3JdjVXeffx4v7Aev22e7UumqFVP1K8btoQ=; b=JFmNBv1oO4O5MUoByVgFTp5wyw3PYGYbo7V0JwLD+qM+VK6//A4Ppzlm/Ko/3YsNmU EwViK5CGyPpuMvWPt4SLz0xd00GLE00jNtApaOwQGD2UpyM2U27E0on+j+il+qoQOMQr keN6hewjszaVi3lqhgCdzpQ1j3VUUInNaXY/pmbX4OivvMyEGAGxgZeM2cQRBwtNEuj2 HSFBeui28qucOitZ5mhv/yGsf9wCxwK7QzrA2Hw7q4gvDYacw0ToAvqeP+Y/Z2Pe9Yr4 hfW4Y+SH+Hwr8Q3eElANEsYM3kSR9g9kyCjLfERxXrEo8ys5MLJYEhojQsHBjzW7+Snz TwiA== X-Gm-Message-State: AOAM533eMsGNkQIcl6VhBrA1BMbuQgG2KGd6SX5vg9o1uFXmgE/uBr6b cJ0IbB8lv+goYxLkPk+DIL4= X-Google-Smtp-Source: ABdhPJwYbDf8tHmqG84H5IlUb9qidIM0U3hQCarKNIOKObdhjyWzAXcau4Gt0lCykLYmp7Zse0WVDw== X-Received: by 2002:a65:640d:: with SMTP id a13mr20052658pgv.272.1616945073786; Sun, 28 Mar 2021 08:24:33 -0700 (PDT) Received: from localhost.localdomain (1-171-1-114.dynamic-ip.hinet.net. [1.171.1.114]) by smtp.gmail.com with ESMTPSA id j188sm14651174pfd.64.2021.03.28.08.24.31 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sun, 28 Mar 2021 08:24:33 -0700 (PDT) From: cy_huang To: lee.jones@linaro.org, lgirdwood@gmail.com, broonie@kernel.org, daniel.thompson@linaro.org, jingoohan1@gmail.com, b.zolnierkie@samsung.com Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, ChiYuan Huang Subject: [PATCH v6 3/4] mfd: rt4831: Adds DT binding document for Richtek RT4831 Date: Sun, 28 Mar 2021 23:24:18 +0800 Message-Id: <1616945059-8718-3-git-send-email-u0084500@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1616945059-8718-1-git-send-email-u0084500@gmail.com> References: <1616945059-8718-1-git-send-email-u0084500@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org From: ChiYuan Huang Adds DT binding document for Richtek RT4831. Signed-off-by: ChiYuan Huang --- .../devicetree/bindings/mfd/richtek,rt4831.yaml | 90 ++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml diff --git a/Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml b/Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml new file mode 100644 index 00000000..4762eb1 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml @@ -0,0 +1,90 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/richtek,rt4831.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Richtek RT4831 DSV and Backlight Integrated IC + +maintainers: + - ChiYuan Huang + +description: | + RT4831 is a multifunctional device that can provide power to the LCD display + and LCD backlight. + + For Display Bias Voltage DSVP and DSVN, the output range is about 4V to 6.5V. + It's sufficient to meet the current LCD power requirement. + + For the LCD backlight, it can provide four channel WLED driving capability. + Each channel driving current is up to 30mA + + Datasheet is available at + https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf + +properties: + compatible: + const: richtek,rt4831 + + reg: + description: I2C device address. + maxItems: 1 + + enable-gpios: + description: | + GPIO to enable/disable the chip. It is optional. + Some usage directly tied this pin to follow VIO 1.8V power on sequence. + maxItems: 1 + + regulators: + $ref: ../regulator/richtek,rt4831-regulator.yaml + + backlight: + $ref: ../leds/backlight/richtek,rt4831-backlight.yaml + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + + rt4831@11 { + compatible = "richtek,rt4831"; + reg = <0x11>; + + regulators { + DSVLCM { + regulator-min-microvolt = <4000000>; + regulator-max-microvolt = <7150000>; + regulator-allow-bypass; + }; + DSVP { + regulator-name = "rt4831-dsvp"; + regulator-min-microvolt = <4000000>; + regulator-max-microvolt = <6500000>; + regulator-boot-on; + }; + DSVN { + regulator-name = "rt4831-dsvn"; + regulator-min-microvolt = <4000000>; + regulator-max-microvolt = <6500000>; + regulator-boot-on; + }; + }; + + backlight { + compatible = "richtek,rt4831-backlight"; + default-brightness = <1024>; + max-brightness = <2048>; + richtek,bled-ovp-sel = /bits/ 8 ; + richtek,channel-use = /bits/ 8 ; + }; + }; + };